According to Variety.com, crew members were released, but were told they would be called back sometime in the future.

The union statement, from International Vice President Michael F. Miller Jr., says they were contacted recently by the Midnight Rider production company, Unclaimed Freight, about work resuming in Los Angeles in June.

"We have expressed our obvious concerns regarding this production starting again," Miller wrote. "The company did not ask for permission and was not granted permission to restart production."

He said the union has asked "for clearances from any and all governmental agencies and/or police agencies that are investigating this company and the individuals involved."

The union is also asking for proof of insurance on the production, and for a set medic and set safety officer.

"The production has also been informed, in no uncertain terms, that the Union presence on this production will be significant," the union says.

We could not reach Unclaimed Freight for comment.

The film will show Allman in both his early years and later in his career. William Hurt will portray the older Allman.